Apatosaurus vs Utahraptor

A detailed side-by-side comparison of Apatosaurus and Utahraptor, covering size, diet, classification, geologic period, and discovery history.

Side-by-Side Comparison

Propriété Apatosaurus Utahraptor
Nom scientifique Apatosaurus ajax Utahraptor ostrommaysi
Classification Sauropoda Dromaeosauridae
Période Jurassic Late Cretaceous Early
Alimentation Herbivore Carnivore
Longueur 22.0 m 5.5 m
Height 4.5 m 1.8 m
Poids 22.7 t 500 kg
Année de découverte 1877 1993
Lieu de découverte Morrison Formation, Colorado, USA Arches National Park, Utah, USA
Nommé par Othniel Charles Marsh James Kirkland et al.

Size Comparison

Apatosaurus 22.0 m

about as long as 4 cars end-to-end

Utahraptor 5.5 m

roughly the length of a large SUV

Weight Comparison

Apatosaurus 22.7 t

about the weight of 3.8 elephants

Utahraptor 500 kg

about 7 adult humans

Timeline Comparison

Apatosaurus
161,5 Mya Jurassic Late (Mesozoic) 145,0 Mya
Utahraptor
145,0 Mya Cretaceous Early (Mesozoic) 100,5 Mya

Diet Comparison

Apatosaurus

Herbivore

Apatosaurus was a plant-eater, feeding on vegetation like ferns, conifers, and cycads.

Utahraptor

Carnivore

Utahraptor was a meat-eating predator, hunting other animals for food.

Classification Comparison

Apatosaurus

Clade: Sauropodomorpha

Group: Sauropoda

(Lizard feet)

Utahraptor

Clade: Theropoda

Group: Dromaeosauridae

(Raptors)

Did You Know?

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Apatosaurus was about 4.0x longer than Utahraptor.

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Apatosaurus weighed roughly 45x more than Utahraptor.

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Apatosaurus was a herbivore while Utahraptor was a carnivore.

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Apatosaurus lived during the Jurassic Late while Utahraptor lived during the Cretaceous Early, separated by roughly 0 million years.

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Apatosaurus was discovered 116 years earlier, in 1877.

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Apatosaurus belonged to Sauropoda while Utahraptor belonged to Dromaeosauridae.

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